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https://issues.apache.org/jira/browse/HBASE-10089?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13842008#comment-13842008
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Mikhail Bautin commented on HBASE-10089:
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[~xieliang007]: yes, you are right. In that case, this problem is specific to
JDK 6 with low permgen size.
> Metrics intern table names cause eventual permgen OOM in 0.94
> -------------------------------------------------------------
>
> Key: HBASE-10089
> URL: https://issues.apache.org/jira/browse/HBASE-10089
> Project: HBase
> Issue Type: Bug
> Affects Versions: 0.94.0, 0.94.14
> Reporter: Dave Latham
> Assignee: Ted Yu
> Priority: Minor
> Fix For: 0.94.15
>
> Attachments: 10089-0.94.txt
>
>
> As part of the metrics system introduced in HBASE-4768 there are two places
> that hbase uses String interning ( SchemaConfigured and SchemaMetrics ).
> This includes interning table names. We have long running environment where
> we run regular integration tests on our application using hbase. Those tests
> create and drop tables with new names regularly. These leads to filling up
> the permgen with interned table names. Workaround is to periodically restart
> the region servers.
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